What has happened to my latency?

On 20th April, when I last reconnected my latency shot up. You can see it on the attached SamKnows monitoring graph and it also shows up on the Thinkbroadband Quality Monitor:It has stayed at that level since. I'm on pcl-ag05

Re: What has happened to my latency?

There's the obvious rise in latency at 11PM, but there is a small drop in the line at 9AM next morning.My graphs flat-line throughout the period, and are on ptn-ag03. Downstream spec is the same (8128 without interleaving), but vanilla upstream rate at 448.However, my last re-connection was on the 11th April, when I too saw a shift in latency. Much smaller than yours, but noticeable.That graph shows a swap from pcl-ag7 to ptn-ag03.

Re: What has happened to my latency?

Maybe we should be running ping/traceroute in the reverse direction - I guess the overall latency depends just as much on the connection that TBB has, and the peering arrangements, as it does on your/PlusNet's connections.Any idea of the IP that the pings come from?

Re: What has happened to my latency?

Pinging the actual gateway gives more variation from ping to ping than pinging something beyond with a short directly peered route eg bbc.co.uk. I put this down to ICMP ping packets being a low priority task for a router and the gateways are busy passing traffic.

When on ADSL- Max I had a solid 8-9ms to bbc.co.uk

Now I've migrated to ADSL +2 its anything between 12ms and 22ms (consistent ping to ping, variation is day to day). Checking with ping to PlusNet gateway confirms bbc.co.uk is a reliable ping return destination.

NB. My router says 'fastpath' both for ADSL MAx and ADSL +2.I think that ADSL +2 may not be such a consistent perfomer for latency. Given there is a marginal synch increase in my case (from ~7Mbps to ~8Mbps) I wonder if ADSL-MAX may be better. Can you have upstream un-capped for > 443kbps upstream on MAX?

Re: What has happened to my latency?

I usually use ntp.plus.net as a target for pings as it takes networks outside Plusnet out of the equation and gives about the shortest route possible excluding the gateway itself.The latency has stayed at it's normal 12-14ms level since dropping back on Wednesday morning.